Chemistry

Question Analysis
This question involves identifying the type of bonding based on electron behavior. The main focus is on determining which substance contains bonds formed by the transfer of electrons, which is characteristic of ionic bonding.

Key Concept Explanation
Ionic bonds typically form between a metal and a nonmetal. Metals tend to lose electrons to form positive ions, while nonmetals gain electrons to form negative ions. The resulting electrostatic attraction between oppositely charged ions creates an ionic compound.

Step-by-step Solution
1. Identify the elements in each compound:
A. SO₂ → sulfur (nonmetal) + oxygen (nonmetal) → covalent bonding.
B. CuO → copper (metal) + oxygen (nonmetal) → ionic bonding (electron transfer).
C. N₂ → two ...